Repairing this "untested" Oric Atmos
51:27
19 сағат бұрын
Looking at the Osglim
8:26
Күн бұрын
Repairing the Roland Cube amplifier
44:35
A year of mistakes
17:50
21 күн бұрын
youmakerobots Maxduino Compact Case
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Repairing an Oric-1
1:03:05
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Linn Classik - no power
35:56
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Amstrad CPC 464 Part 2
1:04:20
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8:37
Quad 34 Repairs Part 1
43:58
2 ай бұрын
Repairing this unloved Armstrong 626
1:01:45
Car boot find! GPO704
19:30
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Storm stops filming
31:15
3 ай бұрын
Marshall MG15CD
25:21
3 ай бұрын
Zero Technical Content
1:34
5 ай бұрын
Aroma amplifier
25:05
5 ай бұрын
A quick look at the Pye 37KT2024
9:29
Ferguson TX9 Movie Star 3790
40:23
Пікірлер
@wasdaletimelapse7658
@wasdaletimelapse7658 Күн бұрын
I waited until the end but probably due to copywrite you didn't give us a tune😂 Nice fix, eventually😂 Thanks for sharing.
@AndyDoz
@AndyDoz Күн бұрын
Entirely due to a lack of talent!
@AndyDoz
@AndyDoz Күн бұрын
.. except for the song about Christine's keyboard ...
@ashleycox432
@ashleycox432 Күн бұрын
college had a cupboard full of the predecessor to these, great keyboards. Spent many an hour doing scales on them and sequencing MIDI from 3.5" floppy. I believe the S500 was one of the first models to go USB for storage
@iangregory9979
@iangregory9979 Күн бұрын
Hi Andy. Works a treat the twin and earth cable. Does that mean I will get some commission. Lol
@AndyDoz
@AndyDoz Күн бұрын
Cheque's in the post...
@PhillipParr
@PhillipParr Күн бұрын
I managed to rescue my CTM 644 from my mum's garage a couple of months ago (I didn't put it in there), where it had been living for a couple of decades. Unfortunately it had been sitting on a damp surface and the main board is heavily corroded. I'm only an ameteur with electronics but even so, I reckon it's a lost cause. The components that haven't rusted off look in good nick!
@AndyDoz
@AndyDoz Күн бұрын
Let it sit in the warm and dry for a few months... You'll be surprised what survives
@PhillipParr
@PhillipParr 22 сағат бұрын
@@AndyDoz I suspect it needs a full bath in isoprop and most if not all of the resistors replaced (they seem to have suffered most corrosion). Many of the traces are also in bad condition. The bottom of the tube itself is corroded so I'm not confident that bit'll work either. I'll keep it for posterity but unless I become an expert restorer in the next 30 years, I think she's gone.
@AndyDoz
@AndyDoz 21 сағат бұрын
@PhillipParr that's a shame.
@richardh100
@richardh100 Күн бұрын
wow another great repair had a same scenario with a laptop😊 thanks again
@dubcavern6414
@dubcavern6414 Күн бұрын
Thanks so mych for this, just received a 65 from france and has helped no end... Pinch roller shaft coated in thick black grease though (along with coming with a tub of it!) and thoight, that can't be right?! Such a messy substance to have near a tape path. I've always used Singer sowing machine oil for the shafts on Space echo's etc. Would you recommend this too for this application? Thanks again!
@AndyDoz
@AndyDoz Күн бұрын
I tend to think that grease has less of a tendency to creep.
@dubcavern6414
@dubcavern6414 19 сағат бұрын
Ah I see! I've gone with the machine oil for now anyway whilst I work on it and test. Unfortunately super weak almost non existent echoes on mine, even though seller is adamant it was working fine!
@ianhuxstep211
@ianhuxstep211 Күн бұрын
I have a Dansette Major record player I am restoring and want to upgrade the Cartridge, looking at your preamp board, it is powered from 12v Would it work from a rectified supply from the EL84 heaters.
@AndyDoz
@AndyDoz Күн бұрын
Yes. Just be careful. If one side of the heaters is grounded, ensure you only use a half-wave bridge. Pull the valve (valves?) and check for continuity.
@AndyDoz
@AndyDoz Күн бұрын
Oh, hang on, is it just a single el84?
@AndyDoz
@AndyDoz Күн бұрын
Just did a brief Google search. Dansette major appears to have a tapped motor for the heaters, so one side is neutral, so that should be your ground side. The issue is I'm not sure my board will have enough output swing for a single el84. If memory serves the original cartridge provided about 4v of output. My board is only around a volt
@FabioL121
@FabioL121 6 күн бұрын
I really respect you and your work man
@AndyDoz
@AndyDoz 6 күн бұрын
Thanks
@kevb1816
@kevb1816 8 күн бұрын
Remember Dixons clearing the stock of these for £19.99. They were piled up OUTSIDE the front doors of the shop. In Liverpool. Don’t think any even got nicked let alone sold! They also cleared out the C64GS cheap too, wish I had bought a few of those….
@wasdaletimelapse7658
@wasdaletimelapse7658 8 күн бұрын
Nice fix Doz. I laughed at the "escape key" joke🤣
@G0LGS
@G0LGS 8 күн бұрын
Good Job
@johnrudden5251
@johnrudden5251 8 күн бұрын
Thanks Doz. Another enjoyable video. I think we all need to form a support group for our eBay habit 🤣
@AndyDoz
@AndyDoz 8 күн бұрын
Absolutely!
@mikehibbett3301
@mikehibbett3301 8 күн бұрын
Lovely rework. Thanks! I remember that computer in my youth. A friend had one back in the 1980s. I went Acorn System 1 -> ZX81 -> C64 - PC. I still have the System 1 :)
@AndyDoz
@AndyDoz 8 күн бұрын
Wow. Now that's a rare thing.
@davidmasters1242
@davidmasters1242 8 күн бұрын
As always Ady great content, just have to loathe E-bay wankerism!
@oldblokeh
@oldblokeh 8 күн бұрын
Thanks Doz. I half expected Blake, Avon and Cally to turn up, pursued by Servalan. Then I remembered it's an Oric, not Orac. I'll get my coat...
@richardh100
@richardh100 8 күн бұрын
great thank you great video as allways , hooray for eBay , (I'm away looking again)😮😊
@jkmac625
@jkmac625 8 күн бұрын
My first computer was a Commodore Vic-20. I knew nothing about computers until I got it as a surprise Christmas present in 1981 or 82 at the latest. The closest thing I had to a computer before that was probably my Speak and Spell. Probably around the early-mid 80s I remember my dad buying a series of computer magazines that you collected and put into special binders. Can't remember what it was called (probably had the word computer in the title) but I remember the binders being dark with I think green lettering. Anyone remember these? I remember there was a photo from Doctor Who in one of them which I think was from The Twin Dilemma so I guess that makes these magazines from around 1984. They featured all the home computers that were available at the time and I'm sure this Oric-1 was in there.
@AndyDoz
@AndyDoz 8 күн бұрын
Input magazine? I think that had green binders.
@tonyboing2312
@tonyboing2312 9 күн бұрын
Happy New Year, Doz :) Nice to see this Osglim working! I saw something similar in a very old Cossor Oscilloscope as a teenager. Gas filled devices are a whole different world..... I've a hydrogen filled Barreter in my old GEC TV from 1956 to control the inrush current to the valve heaters.. The TV still works (so one of my better repairs, lol). Anyway, well done and keep the videos coming. All the best :)
@howler95uk
@howler95uk 9 күн бұрын
Thanks Doz. I've got a dead PP2 and I'll give this a go.
@G0LGS
@G0LGS 11 күн бұрын
Thats something I've never heard of
@2e0mdj
@2e0mdj 11 күн бұрын
Another interesting video, hope the PSU survived, Happy New Year to Doz and Mrs Doz
@AndyDoz
@AndyDoz 11 күн бұрын
It did... Left the discharge switch on. It's only designed to discharge a cap.
@MichaelBeeny
@MichaelBeeny 11 күн бұрын
I wonder how many missed your quit little song at the end. I almost did after you said goodbye.
@petervideos8699
@petervideos8699 11 күн бұрын
Very good I saw one 40 years + 😀
@nigehomer9744
@nigehomer9744 11 күн бұрын
Hope you had some spare smoke for the PSU😂
@AndyDoz
@AndyDoz 11 күн бұрын
Always keep a jar in stock.
@michaeldranfield7140
@michaeldranfield7140 12 күн бұрын
Interesting little bulb, I have a few quite rare bulbs in my collection.
@richardh100
@richardh100 12 күн бұрын
great thank you very interesting looks to be like the mid 1930s 40s technology then was a lot better😊
@wasdaletimelapse7658
@wasdaletimelapse7658 12 күн бұрын
I do hope the power supply survived. How much did you pay for that little item? Thanks for sharing. Happy New Year.
@AndyDoz
@AndyDoz 12 күн бұрын
I can't remember how much. It was a good while ago! I wouldn't have paid much more than a tenner for it.
@AndyDoz
@AndyDoz 12 күн бұрын
It did. I just left the discharge switch closed, then upped the volts. Poor thing got a bit warm!
@markpirateuk
@markpirateuk 12 күн бұрын
I have a couple of Osglim light bulbs from the 1940's, these plug in to a standard bayonet fitting & run on 240vac. they have a beehive internal shape. I guess they were intendrd as night lights, the envelope is a clear standard light bulb shape.
@AndyDoz
@AndyDoz 12 күн бұрын
Beautiful. I'd love one,.but they fetch strong money when they come up for sale.
@markpirateuk
@markpirateuk 12 күн бұрын
@@AndyDoz I was lucky, they came in a job lot of valves I bought from a boot sale some years ago, Iwas more exited about a couple of PX4's in the box!
@SarahJane148
@SarahJane148 12 күн бұрын
Is that an old B17 fitting
@AndyDoz
@AndyDoz 12 күн бұрын
I've always known it as a small bayonet. It probably has a real name somewhere! Same as some oven and sewing machine lamps.
@SarahJane148
@SarahJane148 12 күн бұрын
@AndyDoz the small bayonet holders are B17 they were used for cabinets and wall lights their not made anyone it's all screw in E14 lamps I don't think many companies use standed B22 bayonet lamps apart from us
@AndyDoz
@AndyDoz 12 күн бұрын
@@SarahJane148 I bow to your supervisor knowledge! Thanks for sharing
@SarahJane148
@SarahJane148 12 күн бұрын
@AndyDoz it's amazing what I remember most of its complete nonsense 😀😀
@waynegram8907
@waynegram8907 13 күн бұрын
The main problem was a bad SMD diode, but what does that SMD diode do to the circuit?
@AndyDoz
@AndyDoz 13 күн бұрын
The main problem was the units had been used with the wrong PSU. That diode is polarity protection but is in series with the +ve rail. Once it had failed, the main circuitry was reverse poled, thus blowing the fuse. Quite why the diode actually failed I don't know. It's lucky the amp circuitry itself wasn't damaged.
@augustuscaesar7949
@augustuscaesar7949 14 күн бұрын
Got the same one going to go hdmi to rf then I need to throw on a transformer adapter cuz I don’t have a rf port I have two terminals for uhf should have no problem right?
@AndyDoz
@AndyDoz 14 күн бұрын
Technically you need that coax to two port adapter. It's a balun, although I suspect you'll get away without it ...
@augustuscaesar7949
@augustuscaesar7949 13 күн бұрын
@ yes just tried it I think my tv is messed up I get sound but no picture ugh
@petervideos8699
@petervideos8699 14 күн бұрын
Great repairs well dome happy new year 😀🏴󠁧󠁢󠁳󠁣󠁴󠁿
@AndyDoz
@AndyDoz 14 күн бұрын
Happy new year
@wasdaletimelapse7658
@wasdaletimelapse7658 14 күн бұрын
Great one Doz, full respect for managing the SMD diode, a challenge at the best of times. There is a little bit for next years blooper reel in there as well when you where trying to check continuity with only one lead🤣🤣🤣 Thanks for sharing as always and keep up the great work. All the best for 2025.
@ashleycox432
@ashleycox432 15 күн бұрын
excellent little things the cube albeit expensive, played through them many times. Never opened one though so this was interesting. Happy new year to you and yours Doz and all the best for '25.
@AndyDoz
@AndyDoz 15 күн бұрын
Glad you enjoyed it!
@driftwood9421
@driftwood9421 15 күн бұрын
Another fine cup o'Doz. Was thinking of stop paying the licence fee and up pops the best there's been at Christmas on the Beeb for years. Gets my vote to replace the Bond movie or the Kings speech. Nice one Doz.
@poulpedersen359
@poulpedersen359 15 күн бұрын
Nicely done Doz, you are surely a jack of many trades 🙂. A happy new year to you, now as we have almost spend the old one on many a joyfull adventure in your fine company.
@AndyDoz
@AndyDoz 15 күн бұрын
Happy new year!
@richardh100
@richardh100 15 күн бұрын
great was waiting to see if they both had the same fault , Happy New Year 🍾🥂
@nigehomer9744
@nigehomer9744 15 күн бұрын
Nice dub session at the end
@whatdoctor
@whatdoctor 17 күн бұрын
I could not remember where the speaker plugged back on to the board. Your video got me sorted. Thanks.
@AndyDoz
@AndyDoz 17 күн бұрын
Excellent work. What was the fault with yours?
@whatdoctor
@whatdoctor 13 күн бұрын
Mine just turned out to need a new battery.
@LenovoLenovo-g2f
@LenovoLenovo-g2f 19 күн бұрын
Hi, why my Technics Se -C01 when I rise volume over 50% protection close the sound?😢 Now I see what you do , thank you so much.❤🎉
@AndyDoz
@AndyDoz 16 күн бұрын
Let me know how you get on!
@mattstvbarn
@mattstvbarn 21 күн бұрын
If I did a video of my bloopers I would double the amount of footage on my channel
@AndyDoz
@AndyDoz 19 күн бұрын
😂
@jockethebastard
@jockethebastard 21 күн бұрын
Is it 24V to the clock at all time, or is only every other minute?
@AndyDoz
@AndyDoz 20 күн бұрын
It's a pulse. The polarity of the pulse reverses every minute
@jockethebastard
@jockethebastard 20 күн бұрын
@ I watched the video but guess I lack the knowhow and terminology, but what component achieves the pulse exactly? Is it the microcontroller or some IC?
@AndyDoz
@AndyDoz 18 күн бұрын
The microcontroller decides the direction of the pulse, and controls the h-bridge which sets the polarity of the pulse. There's a better description and a diagram on the website andydoz.blogspot.com/2018/05/synchronised-westerstrand-impulse-clock.html
@jockethebastard
@jockethebastard 15 күн бұрын
@ thanks a lot, I got it working! A pretty scaled down version where I fetch time from the internet and just let it tick tick away. No fancy stuff yet, mainly testing the setup and enjoying the clock so far.
@stevesje71
@stevesje71 21 күн бұрын
Merry Christmas Doz! All the best in 2025
@AndyDoz
@AndyDoz 21 күн бұрын
Thanks. You too
@analoglooney
@analoglooney 21 күн бұрын
Have a very Merry Christmas and a Happy New Year Doz. 🎅
@AndyDoz
@AndyDoz 21 күн бұрын
Same to you!
@Tom-jd1rm
@Tom-jd1rm 21 күн бұрын
love it